fix(daemon): enforce session idle timeout

crates/bsk-cli/src/daemon/state.rs

@@ -81,11 +81,22 @@ pub struct DaemonHandle {
     state: Arc<DaemonState>,
     ws: WsHandle,
     ipc: Option<IpcHandle>,
+    session_idle_task: JoinHandle<()>,
 }
 
 impl DaemonHandle {
-    pub(crate) fn new(state: Arc<DaemonState>, ws: WsHandle, ipc: Option<IpcHandle>) -> Self {
-        Self { state, ws, ipc }
+    pub(crate) fn new(
+        state: Arc<DaemonState>,
+        ws: WsHandle,
+        ipc: Option<IpcHandle>,
+        session_idle_task: JoinHandle<()>,
+    ) -> Self {
+        Self {
+            state,
+            ws,
+            ipc,
+            session_idle_task,
+        }
     }
 
     pub fn state(&self) -> Arc<DaemonState> {
@@ -103,6 +114,8 @@ impl DaemonHandle {
     /// Stop the WS server (and IPC if running). Returns once both join
     /// handles complete.
     pub async fn shutdown(self) {
+        self.session_idle_task.abort();
+        let _ = await_join(self.session_idle_task).await;
         self.ws.shutdown.notify_waiters();
         let _ = await_join(self.ws.task).await;
         if let Some(ipc) = self.ipc {